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@article{Deleglise98,
	author={M. Del{\'e}glise},
	title={Bounds for the density of abundant integers},
	abstract={We say that an integer $n$ is {\it abundant} if the sum of the divisors
		of $n$ is at least $2n$. It has been known [Wall 1972] that the set of
		abundant numbers has a natural density A(2) and that $0.244 \lt A(2) \lt
		0.291$. We give the sharper bounds $$0.2474 \lt A(2) \lt 0.2480.$$},
	journal= expm,
	volume= 7,
	year= 1998,
	pages={137--143},
	number= 2 ,
	mrnumber={2000a:11137}
}